Shade forming and cutting die



(No Model.) 2 Sheets-Sheet I.

E. D. 000KB.

SHADE FORMING AND CUTTING DIE.

No. 512,684. I Patented Jan. 16, 1894.

(No Model.) 2 Sheets-Sheet 2.

E. D. 000KB.

SHADE FORMING AND CUTTING DIE. No. 512,684. Patented Jan.'16, 1894.

nnnnnnnnnnnnn c UNITE TATES PATENT FFICE.

SHADE FORMING -AND CUTTING DIE.

SPECIFICATION forming part of Letters Patent No. 512,684., dated January16, 1894.

Application filed June 14, 1893. Serial No. 477,615. (No model.)

To all whom it may concern.-

l 3e it known that I, EDWARD DEAN CooKE, a citizen of the United States,residing at Ohicago, Cook county, Illinois, have invented a new anduseful Improvement'in Shade Formng and Cutting Dies, of which thefollowing is a specification.

Myinvention relates to forming and cutting d es and has for its objectthe production of dles for cutting and forming shades for electriclamps.

Referring to the accompanying drawings,- Figure is a machine with thedies attached. Fig. 2 Is the bolster plate upon which the lower dierests. Fig. 3 is the part of thelamp shade to be acted upon by the die.Fig.4c is a plan view of lower die. Fig. 5 is a vertical section throughthe center of same. Fig. 6 1s a plan View of the upper die. Fig. 7 is avertical section through center of same. Fig. 8 1s a section on line 8,8, Fig. 4, when the two dies are in engagement and the shade in po-SltlOn between them. Fig. 9 is a section on 11116 9, 9, Fig. 4, underthe same conditions.

Like letters represent like parts throughout.

A plate A upon which the lower die pieceB rests is supported bythe legsA, A. These legs also support the upright pieces or standards A A whichare provided at their upper ends with the bearings A A for the crankshaft 0. Said crank shaft is provided with the double crank C, and thepulley 0 A connectmg rod 0 is journaled at one end to the double crankO, and at the other end to the crosshead 0 working between the guides 0G. This cross-head C carries the upper die D. This die is shaped asshown in Figs. 6 and 7. The die proper, D, is provided with the teeth D,and spaces D and is inserted within the metal piece D which is turneddown so as to form the collar D. A threaded looltD passes through themetal piece D and the die D, being screw-threaded into the latter, tohold 1t in place. A set screw D also helps to hold the die D in place.The teeth D are provided with die-rounded edges D The lower die B isshown in detail in Figs. 4. and 5, and is provided with the teeth B andspaces B similar to the upper die D. The

teeth B are rounded at the lower outside parts B said rounded part beingopposed to a corresponding rounded surface B in the sliding sleeve Bwhich rests upon the three reciprocating rods 13.

The die Bis held in the metal piece B by the set screws B The metalpiece B fits into a circular opening A in the top of the plate .A, andis held in place by the screws B B,

which are screwed into the holes A in the plate A. The part A of theplate A fits into a hole 13 in the metal piece 13 and prevents anylateral motion of said metal piece. The lower ends of the rods, 13, passthrough holes A in the plate A, and rest upon the washer A on the rodA". Said rod is rigidly attached to the plate A, and is provided with acoil spring A the upper end of which bears against the washer A and thelower end against the washer A said washer being held in place by thenut A Fig. 3 representsa central portion of alampshade, ready to beacted upon by the forming die. (This shade is the subject of a separateapplication.)

E represents a flat central portion of the shade upon which the dieacts, having the circular portion E stamped out.

E represents the crimped drooping portion of the shade or the shadeproper,only a smallportion being shown. E and E represents the portionof the shade to be cut and shaped.

The particular form, construction andarrangement of these severaldetails may be altered or varied without departing from the spirit of myinvention, and therefore I do not wish to be limited to the precisearrangement shown.

The use and operation of my invention are as follows:-The lamp shade Eafter being formed as shown in Fig. 3 is placed between the two diesBand D. (See Figs. 8 and 9.) The crank shaftO is caused to revolve insome suitable manner say, by a belt on the pulley 0 This lowers thecross-head 0 (see Fig. 1) and brings the two dies together. The teeth Dof the upper die D are forced between the teeth of the lower die Bcutting the metal of the shade along the dotted lines (Fig. 3) andforcingthe portions E downward. The portions E are forced upward by theteeth B of the die B. The collar D of the upper die D strikes thesliding sleeve B forcing it downward against the tension of the springA3 until said sleeve strikes the metal piece B. In this position theportions E E of the shade are pressed between the rounded edges D of theteeth of the die D, and the rounded surface B of the sliding sleeve Band are given the inwardly curved shape shown in Fig.8. The portions Eare left straight as shown in Fig. 9 and spring slightly outward afterbeing released from the die. As the shaft 0 turns farther the die D israised, until 1t 1s disengaged from the die B. The spring A forces thesliding sleeve B upward to the posltion shown in Fig. 5, when thecompleted shade is removed,another shade inserted, and the processrepeated.

.1 claim 1. In a shadeforming and cutting die, the comblnation of thetwo portions of the die, provided with interlocking fingers or teeth,with operating mechanism which forces the dies together, and causes theteeth to interlock and move along each other so that the interveningmetal is cut, and its out portions bent 1n opposite directions, and asliding sleeve on the outside of one portion of the die, for the purposeof forming and bending the metal portions bent toward it, and freeingthe device from the die.

2. In a stamping and shaping apparatus, the combination of the two diesprovided with interlocking teeth or fingers, the teeth or fingers of onedie being rounded, as at D mechanism for forcing the dies together, asliding sleeve surrounding one of the dies and havin g the roundedsurface, D opposite to which the rounded surfaces, D of the die come andwith which they (so-operate to shape the portions of metal bent by thedies, substantially as set forth.

3. The combination of the two portions of the die provided with theinterlocking fingers or teeth, operating mechanism which forces the diestogether and causes the teeth to interlock and move along each other sothat the intervening metal is bent in opposite directions, a slidingsleeve outside of one of the die portions for the purpose of bending themetal portions bent toward it, and the spring upon which the said sleeveis supported, substantially as set forth.

4. The combination of the upper die provided with the cutting andshaping teeth, the collar into which the upper die is inserted andsecured, the lower die provided with the cutting and shaping teeth, theteeth of the said dies being adapted to interlock when the dies arebrought together, the sliding sleeve surrounding the lower die andco-operating with the upper die to shape the metal portions bent towardit, and into engagement with which sleeve the said collar comes beforethe said dies have been completely forced together, and the yieldingsupport for the said sleeve, substantially as set forth.

EDWARD DEAN COOKE.

Witnesses:

WALTER J. GUNTHORP, D. M. CARTER.

